diff --git a/tests/phpunit/tests/formatting/sanitizeTextField.php b/tests/phpunit/tests/formatting/sanitizeTextField.php
index 240f38850b..ffee225354 100644
--- a/tests/phpunit/tests/formatting/sanitizeTextField.php
+++ b/tests/phpunit/tests/formatting/sanitizeTextField.php
@@ -131,7 +131,7 @@ class Tests_Formatting_SanitizeTextField extends WP_UnitTestCase {
 	 * @ticket 32257
 	 * @dataProvider data_sanitize_text_field
 	 */
-	public function test_sanitize_text_field( $string, $expected ) {
+	public function test_sanitize_text_field( $str, $expected ) {
 		if ( is_array( $expected ) ) {
 			$expected_oneline   = $expected['oneline'];
 			$expected_multiline = $expected['multiline'];
@@ -139,8 +139,8 @@ class Tests_Formatting_SanitizeTextField extends WP_UnitTestCase {
 			$expected_oneline   = $expected;
 			$expected_multiline = $expected;
 		}
-		$this->assertSame( $expected_oneline, sanitize_text_field( $string ) );
-		$this->assertSameIgnoreEOL( $expected_multiline, sanitize_textarea_field( $string ) );
+		$this->assertSame( $expected_oneline, sanitize_text_field( $str ) );
+		$this->assertSameIgnoreEOL( $expected_multiline, sanitize_textarea_field( $str ) );
 
 	}
 }